Answer:
24
Step-by-step explanation:
In effect, there is a proportional relationship between the mass and the volume of the pieces of metal. The equation of the line that adapts to the given data is given by: y = 0.1174x. Therefore the proportionality constant is 0.1174
Answer: SECOND OPTION
Step-by-step explanation:
The area of a parallelogram can be calculated with this formula:

Where "b" is the of one base and "h" is the height.
You can observe in the figure that "b" and "h" are:

Then, substituting these values into the formula, you get that the area of the given parallelogram is:

This matches with the second option.
So you got it then? If you need any more help just ask.
Answer:
One solution: 0x + 0.5y = 0
Step-by-step explanation:
9x + 4y = 36
6x + 2.5y = 24
2 * Eq. 1
18x + 8y = 72
-3 * Eq. 2
-18x - 7.5y = -72
Add the multiples of the equations.
0x + 0.5y = 0
Answer: One solution: 0x + 0.5y = 0